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Extra 300 Prototype #2

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Old 03-03-2007, 12:02 PM
  #126  
DMichael
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Default RE: Extra 300 Prototype #2

Rob,

Here are a couple of pictures- I have started covering. Bottom of wings and fuse is white with the blue and orange. Top of wings and rest of fuse is pearl white with the blue and orange plus silver trim. I should have some more to show in the next few days.

Wayne,

If you are reading this I'm going to finish the wings and then do a trial balance before I cover the fuse. I'll let you know what I find.


Dave


ORIGINAL: RobT

The plastic alone weighs one pound!

Dave... Faye Stille, the person who wrote the series of books on monokoting, told me there is no better place to monokote than an ironing board. I have been doing so ever since...

Feel free to post pictures / weights of yours here...
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Old 03-03-2007, 07:19 PM
  #127  
wgeffon
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Default RE: Extra 300 Prototype #2

Dave,
Thanks.

I love the scheme your putting on that plane!


I picked mine up from Dave today.
Looks naked with no graphics but here it is as of now.

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Old 03-05-2007, 12:00 PM
  #128  
DMichael
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Default RE: Extra 300 Prototype #2

Thanks, Wayne.

Some more progress on the covering. Wings are almost done- just need to do the ailerons. Horizontal stabs done. I'll be moving on to the fuse in the next day or two.

I had some concerns about the pearl white being darker than I wanted but when the sun shines (it was overcast during the pics) it looks really nice. Very windy today- the tail was sitting on a box and blew off cracking my stab a bit- doohh! Easy fix. Almost worse, I went inside to get the camera and one of the wings was lifting and it was on one wheel only! Could have been ugly....

Dave

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Old 03-05-2007, 01:41 PM
  #129  
RobT
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Default RE: Extra 300 Prototype #2

It looks really nice.

What is your method for mounting the canopy...I have been avoiding that, but I think I will have to face it tonight ...

Thanks,
Old 03-05-2007, 03:11 PM
  #130  
DMichael
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Default RE: Extra 300 Prototype #2

Yea, I put that off too. It takes a bunch of work but it is the best looking canopy area going once it's done.

Here's what I did and it's not much different than what the others have done. I chose to glass my hatch like Albert did and I am going to be painting it. I trimmed it out to match up with the hatch and I used a dremel router attachment to cut away (recess) the balsa railing at the side of the hatch so that the plastic canopy - the part that becomes a piece of the fuse as opposed to the scale canopy area- would blend in to the fuse sides.

I installed a piece of balsa up front to glue the plastic to, again recessing it so that the transition from the balsa covered foam part of the hatch would transition as seemlessly as possible with the plastic. Lastly, I recessed the rear portion of the hatch.

After installing it I used some glazing putting to fill in the transition area and sanded, filled, sanded, etc. till it was smooth. I glassed like Albert did- with .75 oz fiberglass and finishing resin- two layers across the seam and one over the whole thing. Back over with more epoxy, sand, repeat as necessary, sanding and filling as needed.

I kind of outsmarted myself a bit on the sides. I didn't recess all the way to the bottom of the hatch- trying to increase my likelyhood of a smooth transition- but then I had to lay a small strip of glass on the sides too. Again, sand and fill and so forth til it was right.

I cut out most of the decking on the hatch- but not all of it like Albert. On the little foam piece that makes up the rear seat instrument panel, I simply glassed it with .75oz - one simple light coat- and then sprayed it like the rest of the hatch- thin primer coat followed by thin flek stone coat.

As they say, pictures are worth 1000 words so have a look at these.

Dave
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Old 03-05-2007, 03:15 PM
  #131  
DMichael
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Default RE: Extra 300 Prototype #2

Here's some with the cockpit painted.

I made my own control panel- bought some very light instruments that my local hobby shop had and mounted them on some scale "diamond plate" plastic that you can get from train shops. Painted the diamond plate silver, printed out this years sequence, mounted it behind plastic and viola- a very light instrument panel!

Dave
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Old 03-05-2007, 03:26 PM
  #132  
DMichael
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Default RE: Extra 300 Prototype #2

Pic of instrument panel.

By the way, in case you haven't already figured it out, I am making my pilot removable.

Dave

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Old 03-05-2007, 04:07 PM
  #133  
OnTheEdge
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Default RE: Extra 300 Prototype #2

ORIGINAL: DMichael
printed out this years sequence, mounted it behind plastic and viola- a very light instrument panel!

Dave
So you gonna redo it in 2008?

That panel looks really good Dave. I like the texture the diamond panel gives.
Old 03-05-2007, 04:37 PM
  #134  
RobT
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Default RE: Extra 300 Prototype #2

I should have been more specific... What I worry about is the actual gluing of the plastic piece to the hatch. In the past I have done it both on and off the fuse, There are advantages to both. But the point is to get everything to blend into the fuse without fluing the canopy to the fuse itself...

ALSO, Do you use goop or RC 56?
Old 03-05-2007, 04:44 PM
  #135  
as722
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Default RE: Extra 300 Prototype #2

Check this out. Walt made a jig to glue the canopy which looks to be the perfect way to glue the canopy.
http://www.****/forums/166946-post762.html

Albert
Old 03-05-2007, 04:46 PM
  #136  
as722
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Default RE: Extra 300 Prototype #2

The **** portion of the link I posted is suppose to be flying giants but it's a bad word here on rcu.

Albert
Old 03-05-2007, 05:59 PM
  #137  
DMichael
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Default RE: Extra 300 Prototype #2

I used goop.
Old 03-05-2007, 07:13 PM
  #138  
OnTheEdge
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Default RE: Extra 300 Prototype #2

I'll use Goop for now on. Two years ago when I stepped over my Extra and kicked hole in the conopy[&o] I had to remove it to replace it. It was put on with goop and it was on there real good. You can stretch that suff several inches, but I was able to remove it without destroying the balsa canopy frame. I was very impressed and used it on the Yak. No more RC56 for me.
Old 03-05-2007, 08:23 PM
  #139  
RobT
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Default RE: Extra 300 Prototype #2

I hate to say this while it is drying, but the goop seemed MUCH better than the RC56. When you put a canopy on with RC56 it is so watery it just slides around... I will let you know how it came out... Thanks,

Rob
Old 03-05-2007, 08:37 PM
  #140  
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Default RE: Extra 300 Prototype #2

looking good dave. i think you need to come to l.i. for the test flight. that way we can help you fly it too!
Old 03-12-2007, 11:10 AM
  #141  
DMichael
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Default RE: Extra 300 Prototype #2

More covering has gone on the plane. In fact, I am almost done covering. Hatch and cowl are mostly orange. Gear and pants will be white.

Dave

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Old 03-12-2007, 11:53 AM
  #142  
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Default RE: Extra 300 Prototype #2

Awesome Dave.
I really like that scheme.
Old 03-12-2007, 07:16 PM
  #143  
DMichael
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Default RE: Extra 300 Prototype #2

Thanks, Wayne. I am very happy with the way it is looking on the plane. I may have found my "signature scheme"!

Dave
Old 03-12-2007, 08:39 PM
  #144  
wgeffon
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Default RE: Extra 300 Prototype #2


ORIGINAL: DMichael

I may have found my "signature scheme"!

Dave
I would say so.


Old 03-13-2007, 03:56 PM
  #145  
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Default RE: Extra 300 Prototype #2

Color sheme is looking good, Dave.

I like it.
Old 03-14-2007, 07:16 AM
  #146  
DMichael
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Default RE: Extra 300 Prototype #2

Thanks, Joe. You get that new 260 in the air yet?

Dave
Old 04-03-2007, 09:09 PM
  #147  
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Default RE: Extra 300 Prototype #2

Dave have you got any more pics of the plane, it looks great!
Old 04-04-2007, 03:59 PM
  #148  
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Default RE: Extra 300 Prototype #2


ORIGINAL: DMichael

Thanks, Joe. You get that new 260 in the air yet?

Dave

I finally got the test flight in along with a few more and I am going to like it plently.
Came in at 35 lbs and it shows when it flies.
Now I have to wait for the snow and cold again. 75 degress yesterday and snow flurries thru Sun. Go Figure ????

Joe
Old 04-05-2007, 06:41 AM
  #149  
DMichael
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Default RE: Extra 300 Prototype #2

ORIGINAL: hoverVT

Dave have you got any more pics of the plane, it looks great!
Tony,

I am finishing up the prepping and priming of the fiberglass right now and hope to have them painted soon. I'll get some more pics once the painted parts are back on the plane. The engine and radio have already been mounted so it should be pretty quick after that.

Dave
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Old 04-09-2007, 03:42 PM
  #150  
RobT
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Default RE: Extra 300 Prototype #2

Today was the maiden! I have flown the 40% Carden Extra 260, Extra 330,and Yak and the 35% of the edge and cap and I feel like the 300 beats them all. (I know that is a lot to say after only 3 flights...)


Right now I have 2% mix in rudder to elevator and 3% rudder to aileron. I am very happy with those numbers.

With the lightening, a cold day and a 2 blade airmodels prop I pulled an up line and did a double snap, followed by an opposite roll followed by an opposite snap and it didn't show any sign of slowing down. I heard a movie quote in my head "UNLIMITED POWER!" and I laughed out loud.

I will get a final weight soon.

Rollers felt very smooth and easy. Snaps were a pleasure.

CG right now is so the plane drops it's nose slightly when inverted.

I still have a lot more trimming to do but I had a big smile on my face at the end of the day.

I still need to order graphics but here she is:
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